Fabspeed Tuning

McLaren 675LT XperTune Performance Software


Achieve maximum power gains (~66 whp & 43 ft-lbs) without sacrificing drivability or reliability. Maps are available for completely stock cars, or for cars equipped with Sport Cats, Cat Bypass Pipes, upgraded turbos, and more.


Stock = 582 whp / 490 ft-lbs

Tuned = 629 whp / 516 ft-lbs

Tune +Fabspeed Sport Catalytic Converters= 635 whp / 526 ft-lbs

Maximum gains of over 65 whp and 43 ft-lbs of torque at 8000 RPM

This is not a physical/shipped product. This upgrade requires you to send us your ECU for re-programming. You will be emailed a download link with detailed instructions after adding this to your cart and checking out.

You must fill out and include a copy of the ECU Information form along with your ECU upon sending it in. Please contact us if you need to send the form in any other manner.

Fabspeed Motorsport saves your stock/factory ECU settings so that you can revert your vehicle back to stock settings at any time.

Special requests and tune file upgrades may be subject to additional fees.